/* -*- coding: utf-8 -*-
 *
 * 3259.cc:  No.3259 C++ 竊・Rust 竊・Python - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* main */

int main() {
  int l, r;
  scanf("%d%d", &l, &r);

  int cnt = 0;
  if (l <= 295 && 295 < r) cnt++;
  if (l <= 416 && 416 < r) cnt++;

  printf("%d\n", cnt);

  return 0;
}